fix exception type for pop on dictionnary

git-svn-id: https://svn.erp5.org/repos/neo/branches/prototype3@570 71dcc9de-d417-0410-9af5-da40c76e7ee4

neo/storage/replicator.py

@@ -331,7 +331,7 @@ class Replicator(object):
             p = protocol.notifyPartitionChanges( app.ptid, 
                  [(self.current_partition.getRID(), app.uuid, UP_TO_DATE_STATE)])
             conn.notify(p)
-        except ValueError:
+        except KeyError:
             pass
         self.current_partition = None